ADU Pass
Guaynabo
Guaynabo Municipio portion
Also in: No County
ADU Pass helps homeowners in Guaynabo, Guaynabo Municipio, Puerto Rico navigate the permit paperwork for building an accessory dwelling unit. This area covers 5 ZIP codes.
Map
ADU details
ADU legality: unclear
Puerto Rico leaves ADU regulation to local municipalities under home-rule or Dillon-rule authority. Guaynabo permits ADUs subject to local conditions per its zoning ordinance.
Cost scenarios
| Scenario | Sq ft | Permit | Build | Total |
|---|---|---|---|---|
| minimum | 150 | $1,800 | $40,500 | $42,300 |
| 600 | 600 | $1,800 | $162,000 | $163,800 |
| midpoint | 525 | $1,800 | $141,750 | $143,550 |
| maximum | 900 | $1,800 | $243,000 | $244,800 |
Fee breakdown (as of 2026-04)
Permitting process
- Pre-consulta y verificacion de calificacion (~7d)
Confirm site classification on JP/OGPe Mapa de Calificacion (zoning) and Mapa de Suelo (soil/land use). Guaynabo (Jerarquia V autonomous municipio) administers Reglamento Conjunto 2023 plus its Plan de Ordenacion Territorial (POT) within municipal limits; verify the parcel falls in a residential district (R-3, R-I, R-G, etc.) where accessory residential use is permitted by-right or as conditional use. - Submit Permiso Unico through Single Business Portal (SBP) - municipal queue (~1d)
Because Guaynabo is a Jerarquia V Municipio Autonomo (Ley 81-1991 / Ley 107-2020 Codigo Municipal), the Permiso Unico application is filed at sbp.pr.gov and routed to the Oficina de Permisos del Municipio Autonomo de Guaynabo (Urban Development Permits Office) rather than central OGPe. Required: planos certificados (architect/engineer-stamped plans), site plan, structural calcs (ASCE 7-22 wind D 175+ mph), and FEMA flood-zone certification. - Evaluacion documental y de cumplimiento (completeness review) (~15d)
Municipal Permit Office reviews submission for completeness within statutory deadlines under Reglamento Conjunto 2023 Tomo II. Deficiency notice (subsanacion) returns the applicant for corrections. - Endosos / agency endorsements (parallel) (~30d)
Concurrent endorsements from Bomberos PR (fire), Salud Ambiental (Health), AAA (water/sewer), AEE/LUMA (electric service), DRNA (environmental if near coastal/wetlands), and ARPe historic if in Old San Juan-style district. Guaynabo has parallel routing through SBP that runs these in parallel rather than sequentially. - Plan check tecnico (zoning, structural, MEP, fire) (~25d)
Technical plan review against IBC/IRC 2018 with PR amendments and Reglamento de Construccion de PR. Hurricane-zone wind exposure D requires confirmed uplift connections, hip roof or impact-rated openings; seismic Zone D2 requires lateral-load load path documentation. - Pago de aranceles e issuance del Permiso Unico (~5d)
Fee schedule per Guaynabo Tarifas de Permisos resolution. Permit issues once endorsements close and fees post. - Inspecciones de construccion
Inspections at foundation/zapata, framing, MEP rough-in, hurricane strapping verification, insulation, and final. Guaynabo conducts inspections municipally; inspector contact via SBP. - Permiso de Uso (Certificate of Use / Occupancy) (~7d)
Final inspection issues Permiso de Uso, the PR equivalent of a Certificate of Occupancy. Required before lawful occupancy or rental.
Viability (permitted uses)
- Long-term rental: yes Long-term rental of ADU generally permitted; landlord-tenant law and any city rental-registration ordinance apply.
- Short-term rental: with-restrictions STR rules vary by city. Guaynabo regulates STRs separately from ADU permitting; check local STR ordinance and HOA covenants.
- Office rental: with-restrictions Detached office rental requires home occupation permit or rezoning.
- Home office: yes Home occupation permitted with restrictions on signage and customer traffic.
- Studio / workshop: yes Personal artist studio is a permitted accessory use.
- Agriculture: with-restrictions Limited urban agriculture permitted in residential zones; livestock varies by district.
- Relative support: yes Family-occupancy ADU explicitly permitted in single-family zones.
Contacts
Staff: OGPe Aguadilla Regional Office (backup central agency) (Central permit authority - applies if delegation revoked), Single Business Portal (SBP) (Statewide intake platform)
Utilities
- Water: Guaynabo Water Utility · 30d connect · $4,500
- Sewer: Guaynabo Sewer / Wastewater · 30d connect · $5,500
- Electric: Guaynabo Electric Utility · 21d connect · $1,800
- Gas: Guaynabo Gas Utility · 30d connect · $1,500
Property values & taxes
Construction timeline
Realistic total: best 9mo · typical 14mo · worst 22mo
Financing
Insurance impact
HOA prevalence & preemption
Puerto Rico's condominium regime is more sophisticated than most US territories — Law 129-2020 modernized the framework, mandated separate operating and reserve accounts, and added a short-term-rental floor — but it does not preempt CC&R restrictions on accessory dwellings. Conventional planned-unit-development HOAs outside the condominium framework are governed by general civil-code contract principles. Practical impact: in Puerto Rico's many condominium and gated-community contexts, ADU rights depend on the master deed.
Regulatory overlays (1)
- seismic-zone
Seismic Design Category D2 per ASCE 7; soft-story and unreinforced-masonry seismic considerations may apply.
Technical envelope (climate & building code)
Climate & energy code
Building code
Amendments:
- Amendment
- Amendment
Legal history (timeline)
Current ordinance: City of Guaynabo Municipal Code — Accessory Dwelling Units, adopted 2020-01-01, last amended 2024-04-01
- 2024-01-01 — City of Guaynabo ADU code refresh (city-ordinance)
Conforming local-code amendments aligning with current Puerto Rico accessory-dwelling framework.
Effect: Codified permissive ADU standards consistent with state law and local zoning.
Puerto Rico state — ADU law and programs
State HOA preemption
Puerto Rico's condominium regime is more sophisticated than most US territories — Law 129-2020 modernized the framework, mandated separate operating and reserve accounts, and added a short-term-rental floor — but it does not preempt CC&R restrictions on accessory dwellings. Conventional planned-unit-development HOAs outside the condominium framework are governed by general civil-code contract principles. Practical impact: in Puerto Rico's many condominium and gated-community contexts, ADU rights depend on the master deed.
State financing programs
Puerto Rico's primary public housing financing vehicle is the Puerto Rico Department of Housing (Departamento de la Vivienda, PRDOH), which administers HUD CDBG-DR and CDBG-MIT recovery funds tied to Hurricanes Irma and María (2017) and the 2019–2020 earthquake sequence. The flagship homeowner-side program is R3 — the Home Repair, Reconstruction, or Relocation Program — funded with $2.2B+ of the $10B in CDBG-DR funds HUD has allocated to Puerto Rico for hurricane recovery. R3 funds repair, reconstruction, or relocation for single-family homes damaged by qualifying disasters; ADU-equivalent accessory structures could be built as part of a qualifying reconstruction but the program is not ADU-targeted. The Puerto Rico Housing Finance Authority (Autoridad para el Financiamiento de la Vivienda, AFV) issues mortgage-revenue-bond first-mortgage financing for first-time homebuyers. Outside the disaster-recovery channels, there is no commonwealth-wide ADU-specific consumer loan or grant.
Federal (United States) — ADU-relevant rules and programs
Federal ADU law
The United States has no federal statute that directly regulates accessory dwelling unit entitlement or design. Land-use authority over ADUs resides with states and local governments under the traditional police power. Federal engagement is limited to financing (Fannie/Freddie/FHA/VA/USDA), flood insurance (FEMA/NFIP), and discretionary housing programs (HUD), which are recorded in sibling sections of this file.
Federal financing programs
Federal housing-finance agencies and GSEs set nationwide underwriting rules that govern whether an ADU can be financed, appraised, and counted toward mortgage qualifying income. The relevant actors are Fannie Mae, Freddie Mac, FHA (HUD), VA, and USDA Rural Development.
Federal tax credits
There is no ADU-specific federal tax credit. ADUs may incidentally qualify for existing federal energy-efficiency and clean-energy tax credits when the ADU construction includes qualifying measures.
Federal housing programs
HUD administers several discretionary programs that can fund ADU-related activity at the grantee's election, but none is an ADU-specific program.
ZIP Codes
- 00934
- 00966
- 00968
- 00969
- 00971
Post Office
- 100 Calle Cecilio Urbina, 00969
- 1498 Ave Fd Roosevelt Ste 5b, 00968
Locale Names
- Caparra Heights